User Manual

Table Of Contents

1.2 Hardware

The LPU hardware device is the brain of your Cuety system. This box takes

care of all the calculation of DMX levels, cue timing and FX engine. Therefore,

all the information about the patch and cues are stored in this device. In a

way, the Apps are just ’user interface’. This means that when the communica-

tion between the LPU and the App is interrupted, perhaps because of a Wi-Fi

problem, then your show will continue to run.

This also means that when you use the LPU for lighting in a permanent in-

stallation then you only need to connect the (Remote) App when you want to

change to a diﬀerent cue. When not connected to an App, the LPU will just

continue to run the currently active cues.

1.3 Saving data to memory

This manual will describe how to conﬁgure the LPU and program playbacks,

cues, etc. The Cuety App is used for editing these kinds of elements. When

changes are made, these changes are directly stored in the RAM memory of

the LPU and the programming will directly inﬂuence the behaviour of the unit.

RAM memory is, however, volatile and its content will be lost through a power

cycle. For this reason the LPU will copy any changes in the RAM memory to its

onboard ﬂash memory. Flash memory retains its data even when not powered.

The LPU will load all its data back from the ﬂash memory upon startup.

This memory copy process is conducted automatically by the LPU and should

not be of any concern of the user. One point of consideration is, however, that

after making a change the unit should be given time to perform the copy to

ﬂash. As a rule of thumb, do not disconnect the power from the device within

30 seconds from making a programming change.

1.4 LPU-1 vs LPU-2

The LPU is available in two versions, the LPU-1 and the LPU-2. The diﬀerence

between the two units is that the LPU-2 has additional options to connect

to external systems. Only the LPU-2 has support for OSC, TCP, UDP and

HTTP protocols, making it very suitable to be integrated in permanent systems.

Appendix A discusses the LPU-2’s connectivity in detail.